Trading volume on Kalshi and Polymarket has scaled from a niche 2024 experiment to a multi-billion-dollar election event, drawing mainstream media and financial scrutiny.
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With Election Day live, forecasters and academics are watching whether market prices beat polls on House and Senate control after a string of high-profile misses.
Kalshi and Polymarket contracts have moved sharply toward Democrats in the final days of the campaign, with Senate odds jumping on Election Day.
Bloomberg and others report that despite record dollar totals, election-specific activity is growing slower than sports and crypto contracts on the same platforms.
A court declined to block Wisconsin's rule forcing election traders to choose between voting and holding prediction market positions, and state officials warn violators face felony exposure.
Lawmakers want the platforms to show how they detect manipulation and insider trading in election contracts ahead of the vote.
The sports betting exchange becomes the latest regulated entrant in federally overseen event contracts, adding competition to Kalshi and Polymarket.
Industry observers expect Congress and regulators to revisit event contracts once the election is over, with platforms dependent on political goodwill they cannot fully control.
Reuters reports a wave of retail and professional traders treating election contracts as a financial position rather than a novelty.
The forecaster compared his final model with market prices and found unusual divergences in several races, feeding the debate over market accuracy.
A manipulation study found thin order books in some midterm markets allow relatively cheap price moves, a key concern for regulators.
Market prices put the Democratic candidate around 72%, a gap with traditional polling that has become a test case for election contracts.
Local reporting says millions traded on Maine races, raising questions about people with non-public information taking positions.
Oddschecker reports Adam Hamilton taking the lead in Kansas, while a prominent model gives Democrats 90% odds of Senate control as the state trends blue.
The Kalshi news feed shows the Democratic candidate's contract climbing to a new high heading into Election Day.
Pensions & Investments reports asset managers are exploring multi-outcome event contracts as hedging and research instruments.
Market prices favor Democrats in Ohio's Senate and governor races, with Brown holding a strong lead over Jon Husted.
CNBC reports the gap narrowing but the incumbent Republican remaining the market favorite.
Market pricing diverges from public polling in Florida's Senate and governor contests, where Byron Donalds and Ashley Moody are favored.
CNBC reports concentrated derivatives positioning around sectors sensitive to the midterm outcome.
Bloomberg examines how a shift in congressional control could reshape the regulatory environment for newer financial firms.
Covers.com's race preview puts the Democratic challenger ahead of the incumbent Republican in prediction market pricing.
Action Network and Forbes track the final odds in Alaska's Senate contest.
Prediction markets show the California contests largely settled, with Karen Bass reclaiming the lead in the Los Angeles mayoral race.
RotoWire and Covers.com break down market pricing across Iowa's statewide races.
Local outlets are running live coverage of voting across the two states, with polls and markets watched closely.
Action Network and Forbes round up prediction market pricing in the two states' key races.
Forbes tracks the final market odds across Virginia's statewide contests.
The Bergen Record rounds up final polling in a closely watched New Jersey contest.
The Coloradoan compares statewide polling with market pricing before votes are counted.
A large volume of service, explainer and aggregation pieces repeats the same market data without adding new reporting.
Omitted: promotional signup and bonus-code articles for election trading apps.